Method for fabricating an aluminum electrolytic capacitor device

摘要

An aluminum electrolytic capacitor has a large cylindrical hole (6) in a core portion thereof. The anode and cathode foils and electrolyte-containing papers (3) are rolled with less tension for an initial predetermined number of turns than for the later turns. Instead of forming the hole large, a core portion is formed by rolling the electrolyte-containing papers (3) and either the anode foil (1 or 2) or the cathode foil (1 or 2), or neither of them.